Its all about what offset you get them made to. Im not sure about 22's but 15x7s with 205s fit in the front of my ra28 nice. and 8"s fit in the back with 225 so id assume you'd be able to get close to this with a 22. Can anyone clarify?
If there for a ta22 you may as well get them made to fit perfectly in the guards.. Is the car lowered/slammed? if so factor this in when measuring the space in the wheel arch.
as far as handling, the wider the tread the more of it gripping the road so it cant be a bad thing.. it'l just feel solid on the road and be a little stiffer on the steering components..
My car had 15x6s all round then i went to 15x7&15x8 with better rubber and it has never felt better into corners... gets a bit more traction all round too... not to mention pulling up in a hurry..